1813029900 has 72 divisors (see below), whose sum is σ = 5722592064. Its totient is φ = 439521600.

The previous prime is 1813029893. The next prime is 1813029931. The reversal of 1813029900 is 99203181.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271402 + ... + 278001.

Almost surely, 2^1813029900 is an apocalyptic number.

1813029900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1813029900 is an abundant number, since it is smaller than the sum of its proper divisors (3909562164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813029900 is a wasteful number, since it uses less digits than its factorization.

1813029900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549431 (or 549424 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1813029900 is about 42579.6888199057. The cubic root of 1813029900 is about 1219.3685480817.

The spelling of 1813029900 in words is "one billion, eight hundred thirteen million, twenty-nine thousand, nine hundred".